High severity · published Sep 23, 2026
CVE-2026-91798
Foxit PDF Editor/Reader Updater Privilege Escalation
8.8
CVSS
0.1%
EPSS
No
On KEV
Description
A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FP
Foxit PDF Editor · Foxit Software Inc.
Versions 2026.2 and earlier; Versions 14.0.7 and earlier; Versions 13.2.6 and earlier · source: vendor
FP
Foxit PDF Reader · Foxit Software Inc.
Versions 2026.2 and earlier · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91798
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91798
www.foxit.com
https://www.foxit.com/support/security-bulletins.html
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